<template>
  <div class="header">
    <div class="nav-topbar">
      <div class="container">
        <div class="topbar-menu">
          <a href="javascript:;">小米商城</a>
          <a href="javascript:;">MUI</a>
          <a href="javascript:;">云服务</a>
          <a href="javascript:;">协议规则</a>
        </div>
        <div class="topbar-user">
          <a href="javascript:;" v-if="username">{{username}}</a>
          <a href="javascript:;" v-if="!username" @click="login">登陆</a>
          <a href="javascript:;" v-if="username" @click="logout">退出</a>
          <a href="/#/order/list" v-if="username">我的订单</a>
          <a href="javascript:;" v-if="!username">注册</a>
          <!-- 图标字体后面加上 -->
          <a href="javascript:;" class="my-cart" @click="goToCart">
            购物车({{cartCount}})
          </a>
        </div>
      </div>
    </div>
    <div class="nav-header">
      <div class="container">
        <div class="header-logo">
          <a href=""></a>
        </div>
        <div class="header-menu">
          <div class="item-menu">
            <span>小米手机</span>
            <div class="children">
              <ul>
                <li class="product" v-for="(item) in phoneList" :key="item.id">
                  <a :href="'/#/product/'+item.id" target="_blank">
                    <div class="pro-img">
                      <img :src="item.mainImage" alt="" />
                    </div>
                    <div class="pro-name">{{item.name}}</div>
                    <div class="pro-price">{{item.price | currency}}</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
          <div class="item-menu">
            <span>Redmi红米</span>
            <div class="children"></div>
          </div>
          <div class="item-menu">
            <span>小米电视</span>
            <div class="children">
              <ul>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-1.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-2.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-3.png" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-4.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-5.jpg" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
                <li class="product">
                  <a href="#" target="_blank">
                    <div class="pro-img">
                      <img src="../../public/imgs/nav-img/nav-3-6.png" alt="" />
                    </div>
                    <div class="pro-name">小米CC9</div>
                    <div class="pro-price">1799</div>
                  </a>
                </li>
              </ul>
            </div>
          </div>
        </div>
        <div class="header-search">
          <div class="wrapper">
            <input type="text" name="keyword" />
            <a class="iconfont" href="javascript:;">&#xe602;</a>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapState } from 'vuex'
export default {
  name: 'NavHeader',
  data() {
    return {
      phoneList: []
    }
  },
  computed: {
    // 还可以这样 具体参考 vuex文档
    // username() {
    //   return this.$store.state.username
    // },
    // cartCount() {
    //   return this.$store.state.cartCount
    // },
    ...mapState(['username', 'cartCount'])
  },
  filters: {
    currency(val) {
      if (!val) return '0.00'
      return '￥' + val + '元'
    }

  },
  mounted() {
    this.getPhoneList()
    let params = this.$route.params
    if (params && params.from === 'login') {
      this.getCartCount()
    }
  },
  methods: {
    login() {
      this.$router.push('/login')
    },
    logout() {
      this.axios.post('/user/logout').then(() => {
        this.$message.success('退出成功')
        this.$cookie.set('userId', '', { expires: '-1' })
        this.$store.dispatch('saveUserName', '')
        this.$store.dispatch('saveCartCount', '0')
      })
    },
    getCartCount() {
      this.axios.get('/carts/products/sum').then((res) => {
        this.$store.dispatch('saveCartCount', res)
      })
    },
    getPhoneList() {
      this.axios
        .get('/products', {
          params: {
            categoryId: '100012'
          }
        })
        .then((res) => {
          if (res.list.length > 6) {
            console.log(res)
            this.phoneList = res.list.slice(0, 6)
          }
        })
    },
    goToCart() {
      this.$router.push('/cart')
    }
  }
}
</script>

<style scoped lang="scss">
@import "../assets/scss/base.scss";
// 坑点 不加url
@import "../assets/scss/mixin.scss";
@import "../assets/scss/config.scss";

.header {
  .nav-topbar {
    height: 39px;
    line-height: 39px;
    background-color: #333333;
    color: #b0b0b0;

    .container {
      @include flex();
      a {
        display: inline-block;
        color: #b0b0b0;
        margin-right: 17px;
      }
      a:last-child{
        margin-right: 0;
      }
      .my-cart {
        color: #ffffff;
        width: 110px;
        background-color: #ff6600;
        text-align: center;
        &:before{
          content: '\e601';
          font-family: iconfont;
          margin-right: 5px;
        }
      }
    }
  }

  .nav-header {
    .container {
      position: relative;
      height: 112px;
      @include flex();

      .header-menu {
        display: inline-block;
        padding-left: 209px;
        width: 643px;

        .item-menu {
          font-weight: bold;
          font-size: 16px;
          display: inline-block;
          color: #333333;
          margin-right: 20px;
          line-height: 112px;

          span {
            cursor: pointer;
          }

          &:hover {
            color: $colorA;

            .children {
              height: 220px;
              opacity: 1;
            }
          }

          .children {
            position: absolute;
            z-index: 10;
            top: 112px;
            left: 0;
            opacity: 0;
            overflow: hidden;
            background-color: #fff;
            height: 0;
            width: 1226px;
            border-top: 1px solid #e5e5e5;
            box-shadow: 0px 7px 6px 0px rgba(0, 0, 0, 0.11);
            transition: all 0.5s;

            .product {
              position: relative;
              float: left;
              width: 16.6%;
              height: 220px;
              font-size: 12px;
              line-height: 12px;
              text-align: center;
              &:before {
                content: "";
                position: absolute;
                top: 35px;
                right: 0;
                border-right: 1px solid $colorF;
                height: 100px;
                width: 1px;
              }

              &:last-child:before {
                display: none;
              }

              a {
                display: inline-block;
              }

              img {
                width: auto;
                height: 111px;
                margin-top: 26px;
              }

              .pro-imh {
                height: 137px;
              }

              .pro-name {
                font-weight: bold;
                margin-top: 19px;
                margin-bottom: 8px;
                color: $colorB;
              }

              .pro-price {
                color: $colorA;
              }
            }
          }
        }
      }

      .header-search {
        width: 319px;

        .wrapper {
          height: 50px;
          border: 1px solid #e0e0e0;
          display: flex;
          align-items: center;

          input {
            box-sizing: border-box;
            border: none;
            border-right: 1px solid #e0e0e0;
            width: 264px;
            height: 50px;
            padding-left: 14px;
          }
          a {
            display: inline-block;
            width: 18px;
            height: 18px;
            margin: 0 auto;
            font-size: 20px;
            color: #333333;;
          }
        }
      }
    }
  }
}
</style>
